Two-color upconversion in rare-earth-ion-doped ZrO2 nanocrystals

被引：152

作者：

Chen, G. Y. ^{[1
]}

Zhang, Y. G.

Somesfalean, G.

Zhang, Z. G.

Sun, Q.

Wang, F. P.

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Dept Chem, Harbin 150001, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 16期

关键词：

D O I：

10.1063/1.2363146

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To develop fluorescent labels for multicolor imaging, rare-earth-ion-doped ZrO2 nanocrystals were prepared by a complex precursor method. Laser excitation of 976 nm induced single fluorescent bands of green and red upconversion (UC) in ZrO2:Er3+ and ZrO2:Er3++Yb3+ nanocrystals, respectively. A suppression ratio (SR) parameter was introduced, defined as the UC intensity ratio of the main band to all the other detected impurity bands, and SR values in the order of 10-100 were experimentally obtained, demonstrating the excellent monochromaticity of the UC labels. Thus, the two-color UC labels obtained are potentially ideal to be used for biological multicolor imaging.

引用

页数：3

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